A 92 Dodge truck is an excellent vehicle to buy if you want to learn mechanics. I didn't know anything about truck engines when I first bought it, but soon had to learn, because it hardly goes one or two days without something new happening. The small signals like the O2 sensor not getting throught the 60-way connector was my first problem which meant it was always running in open loop. But recently I had the engine totally overhauled and the transmission too. The trouble I have now is that it will run beautifully for miles then you come to a town where you have to slow down and suddenly the engine won't idle .. it dies. You can start it up and it will stop again. Well after I let it sit for awhile and wiggle all the wires and so forth it will run ok again for quite awhite before it starts the same thing again. There are no trouble codes showing. Thanks.
I finally replace both throttle sensors and it fixed the problem. The truck
is running very nicely now. But it sure was a weird problem for a while .. something like an engine having an erratic fit. I found out that I could initiate the problem by driving along slowly and tapping on the gas pedal with my foot, which led to replacing the throttle position sensor and idle stop sensor.
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Re: 92 Dodge One Ton 5.9litre
I would assume that the wires you are wiggling probably were overlooked or possibly defective. Sounds like you have had the mechnical parts replaced and possibly not the electrical harness(es) replaced. They tend to cost alot, sometimes you can find damage if it's obvious, other times it's in the connectors.
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Buy a repair manual for your vehicle and take it step to replace the water pump. I was a mechanic for 21 years and I always referred to drawings, blueprints and directions when servicing anything. A waterpump used to be pretty easy to replace on pre-1990 vehicles, but one these newer vehicles there is so much stuff that manufacturers put in the way, or mount differently. I have also gone to youtube to see if somebody else has done it so I don't have to learn by trial and error. . .
Did you replace the fuel filter when you replaced the pump ? Was it running rough before the pump was replaced. Did you replace the cap and rotor too ? "Sucking a ton of air" could be a vac leak, or the sound of the throttle open when the engine is bogging down. Is the check engine light on when it is running ?
If you mean the mechanic plugged in a code reader and didn't get any codes, some engine troubles won't make the light come on. You can't fix what you don't know is wrong so try this. Does it make the noise if the car is NOT moving? if it only makes the banging while driving then I would be looking for a loose body part. If it makes the noise while sitting still then you need to find a mechanic that can "listen" to the engine noise and determine if it is coming from the "top end" or "bottom end' of the engine.
To make a wise decision, first, NEVER buy any vehicle you can't see, drive and examine. (no exceptions). If you do not have any mechanical experience, hire a competent mechanic to go with you to look it over. Or, have it brought to a shop for a full examination. if buying from a dealer, make sure you get a guarantee of roadworthy condition. Never buy a salvage title vehicle unless you intend to replace nearly every component as many of those were underwater. If you do bring a mechanic with you, understand that even the best people can miss something. If there is anything that makes you uncomfortable about the deal, don't do it. Most used vehicles are sold because the owner has either decided he needs something different to meet his needs. Those vehicles are usually in decent condition. Always take as long a test drive as possible to permit the transmission to warm up. Any flaring or slipping can mean a huge bill very soon. If possible, get a complete history of service (many times available online). If you do these things you have a really good chance at getting a good one!!! Good Luck!!!